Nah, check out data warehouses. This data is really limited in details (anything more than from and to telephone numbers, and start and stop times?), and can be shoved into a data warehouse without any analysis as that word is generally understood.

Of course it gets indexed, but that's automatic and mindless.

I see your point but I am so tempted to assume that they are not just storing it in some flat dump but trying to extract some sort of higher order representation of the data as they are processing it into the warehouse. You could argue that surfacing trends is technically not "querying".